[化] 磁能密度

The key difference of course is that a sunspot's 最关键的不同点在于太阳黑子 an awful lot bigger and so the total energy, 大得多,所以太阳磁场内 or the amount of energy in the magnetic field 所含的总能量大得惊人 on th

发表于:2018-12-07 / 阅读(126) / 评论(0) 分类 太阳科普

A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets

发表于:2018-12-07 / 阅读(344) / 评论(0) 分类 超大质量黑洞

微波炉发明源于一项最高军事机密 Many people around the world use a microwave oven every day, not knowing that a crucial part of it was once a top military secret. 世界上许多人每天都在使用微波炉,但却不了解它曾经是一

发表于:2018-12-16 / 阅读(60) / 评论(0) 分类 VOA标准英语2016年(二月)

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Don't be fooled by those big bovine eyes and the mouth slowly chewing cudcows have a magnetic personality. At least thats the claim made by German researchers in the

发表于:2018-12-24 / 阅读(118) / 评论(0) 分类 Scientific American(八)月

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 kneel [ ni:l ] She knelt to pray. v. 跪

发表于:2018-12-30 / 阅读(132) / 评论(0) 分类 每日攻克5词

How Does Ice Cool Drinks? Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? Heat is a measure of molecular activity: the faster a

发表于:2018-12-31 / 阅读(51) / 评论(0) 分类 英语听力文摘 English Digest

American inventor John Goodenough first started working on battery technology more than 40 years ago. Goodenough actually co-invented lithium-ion batteries in 1980. This eventually led to a revolution in the electronics industry because those devices

发表于:2019-01-02 / 阅读(76) / 评论(0) 分类 2017年VOA慢速英语(五)月

Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou

发表于:2019-01-12 / 阅读(97) / 评论(0) 分类 2014年VOA慢速英语(九)月

By David McAlary Washington 18 February 2007 The U.S. space agency NASA has launched five satellites - the most ever from one rocket - to locate the source of energy in Earth's magnetic field that triggers the colorful, dancing auroras over the north

发表于:2019-01-12 / 阅读(113) / 评论(0) 分类 2007年VOA标准英语(二月)

Chicagos Argonne Lab Developing Battery of the Future CHICAGO In 2012, the Department of Energys Office of Science awarded a $120 million grant to a new technology center focused on battery development - headquartered at Argonne National Laboratory i

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2014年(七月)

How Military Research Finds Its Way to Everyday Life 军事研究是如何走进日常生活的? WASHINGTON Sometimes simple scientific advances in one field can have value far beyond their intended use. Many of these advances can change the world an

发表于:2019-01-14 / 阅读(56) / 评论(0) 分类 VOA标准英语2015年(十二月)

Astronomers have detected the brightest explosion ever witnessed in the heavens. It was a flash of light from across our galaxy so powerful that it bounced off the Moon and illuminated Earth's upper atmosphere. The researchers say if the blast had oc

发表于:2019-01-19 / 阅读(86) / 评论(0) 分类 VOA双语新闻 Bilingual News

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

发表于:2019-01-22 / 阅读(74) / 评论(0) 分类 自然百科2011年

By Brian Padden Paris 21 June 2007 The airline industry has long sought to develop new technology to offset the rising cost of fuel, but the industry also has looked to make flying more energy efficient. This year at the Paris Air Show many companies

发表于:2019-01-30 / 阅读(91) / 评论(0) 分类 2007年VOA标准英语(六月)

Scientists from the University of Central Florida (UCF) have created a supercapacitor battery prototype that works like new even after being recharged 30,000 times. 来自中佛罗里达大学(UCF)的科学家已经创造了一个超级电容电池

发表于:2019-02-02 / 阅读(64) / 评论(0) 分类 英语新闻

China's first permanent magnetic monorail train has successfully completed a test run in the city of Qingdao, in Shandong Province. The high-tech urban transportation system features strong climbing capacity, a small turning radius, energy efficiency

发表于:2019-02-05 / 阅读(96) / 评论(0) 分类 cctv9英语新闻2016年

matter 物质 energy 能 vacuum 真空 liquid 液体 fluid 流体 solid 固体 body 物体 mass 质量 weight 重量 density 密度 specific gravity 比重 gravity 重力 velocity 速度 kinetic energy

发表于:2019-02-07 / 阅读(97) / 评论(0) 分类 英文语法词汇

This dark energy doesn't behave like any other substance we know at all and acts more like antigravity force. 这种暗能量的性质与我们所熟知的其他物质完全不同,它更像是反重力。 We say that it has a gravitational pressure

发表于:2019-02-13 / 阅读(61) / 评论(0) 分类 TED演讲教育篇

Looking up at the night sky, we are amazed by how it seems to go on forever. 仰望夜空,我们为它的永无止境而感到惊讶。 But what will the sky look like billions of years from now? 然而数十亿年前的天空又会是什么样子呢

发表于:2019-02-13 / 阅读(77) / 评论(0) 分类 TED演讲教育篇

After failing in Beijing's license plate lottery system for some three years, Qin Xiaofei finally made his decision in January to buy a battery-driven car to chauffeur his wife who has recently become pregnant. But, he says, one of the biggest concer

发表于:2019-03-04 / 阅读(112) / 评论(0) 分类 2016CRI中国国际广播电台
学英语单词
acid catalyst
actress-writer
aded
Alsation
anti-Christianism
Avraam
berkhofer
biteplates
brought over
business.
calculus of nature inference
carcass trait
coking unit
contristated
credit association
cylindro-spherometer
defoliants
design standard of large dam
diadematoids
dih
displacement margin
double entry table
draper canvas
due from foreign banks
estrus in gestation
fall short of expectations
first-in-first-out
foot accelerator
fromont
genus Anastatica
ghastliness
gilt edged shares
goofiness
half-fields
heparization
Hexinia polydichotoma
honor curriculum
hurdle rate
hypothesis-testings
inspection on damaged cargo
international shipping legislation
international system of units (si)
investment income
j'adore
Kgalagadi Basin
Khreum
lassic
Lavenham
lvf
made a monkey out of
make an offence
Malus yunnanensis
marcrophage
median unbiassed estimator
membrane-less
multiple-switch-board
music database
nephritic calculus
nikel silicon carbide surface
notch sensitivity
outrigger canoes
per unit area
perai
Peters' reaction
pgl
phone cord
Pigeon R.
premium charge
propylammonium
psychology of youth
publicizer
remission of crime
resonant particle
resonator mode
returns of unsold consignment
rhinalgia
ring shift right
rudimental
safety factor for drop-out
scented candle
scroungiest
Semnopithecus entellus
skeet skeets
skylight purlin
solfataric clay
special handling requirements
strontium bitartrate
Sukošan
table of frequency allocations
table-mountain pine
thief sand
three groups
thyll
track radar
trinitramine
Tupians
undispended
weatherboard
westerwaldite
Yatton Keynell
zadruge
zenanas